add missing dependency

testing/gtest.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'gtest',
       'type': 'static_library',
       'sources': [
         'gtest/include/gtest/gtest-death-test.h',
         'gtest/include/gtest/gtest-message.h',
         'gtest/include/gtest/gtest-param-test.h',
         'gtest/include/gtest/gtest-printers.h',
         'gtest/include/gtest/gtest-spi.h',
         'gtest/include/gtest/gtest-test-part.h',
         'gtest/include/gtest/gtest-typed-test.h',
         'gtest/include/gtest/gtest.h',
         'gtest/include/gtest/gtest_pred_impl.h',
-        'gtest/include/gtest/gtest_prod.h',
         'gtest/include/gtest/internal/gtest-death-test-internal.h',
         'gtest/include/gtest/internal/gtest-filepath.h',
         'gtest/include/gtest/internal/gtest-internal.h',
         'gtest/include/gtest/internal/gtest-linked_ptr.h',
         'gtest/include/gtest/internal/gtest-param-util-generated.h',
         'gtest/include/gtest/internal/gtest-param-util.h',
         'gtest/include/gtest/internal/gtest-port.h',
         'gtest/include/gtest/internal/gtest-string.h',
         'gtest/include/gtest/internal/gtest-tuple.h',
         'gtest/include/gtest/internal/gtest-type-util.h',
@@ skipping 10 matching lines @@
         'multiprocess_func_list.h',
         'platform_test.h',
       ],
       'sources!': [
         'gtest/src/gtest-all.cc',  # Not needed by our build.
       ],
       'include_dirs': [
         'gtest',
         'gtest/include',
       ],
+      'dependencies': [
+        'gtest_prod',
+      ],
       'conditions': [
         ['OS == "mac"', {
           'sources': [
             'gtest_mac.h',
             'gtest_mac.mm',
             'platform_test_mac.mm'
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
@@ skipping 62 matching lines @@
     {
       'target_name': 'gtest_main',
       'type': 'static_library',
       'dependencies': [
         'gtest',
       ],
       'sources': [
         'gtest/src/gtest_main.cc',
       ],
     },
+    {
+      'target_name': 'gtest_prod',
+      'toolsets': ['host', 'target'],
+      'type': 'none',
+      'sources': [
+        'gtest/include/gtest/gtest_prod.h',
+      ],
+    },
   ],
 }